/* ==========================================================================
   ARTIFACT MACHINE — PAGE STYLES
   --------------------------------------------------------------------------
   Shared by the tool pages and About. Depends on tokens.css and motion.css,
   which must be linked first.

   This replaces an inline <style> block that was byte-identical across all
   eleven tool pages — so the same defect was shipped eleven times and any fix
   had to be made eleven times. One file now.

   Two things from the old block were deliberately NOT carried over:
     border-radius: 10px on cards and buttons — the identity is hard-edged;
       a rounded corner is the fastest way to make a tool look like a
       consumer app. The chamfer is the only permitted softening.
     border-radius: 100px on .tag — pill shapes are roundels, which the
       system forbids. Tags are now square-cut.
   ========================================================================== */

*,*::before,*::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--am-bg);
  color: var(--am-text);
  font-family: var(--am-font-sans);
  font-size: var(--am-text-md);
  line-height: var(--am-leading-body);
  -webkit-font-smoothing: antialiased;
  hanging-punctuation: first last;
}
.wrap { max-width: 62rem; margin-inline: auto; padding-inline: var(--am-space-6); }
a { color: var(--am-accent); text-underline-offset: 2px; }

/* Skip link — first tab stop, visible only on focus. */
.skip {
  position: absolute; left: -9999px; top: 0; z-index: var(--am-z-top);
  background: var(--am-accent); color: var(--am-on-accent);
  padding: var(--am-space-3) var(--am-space-5); text-decoration: none;
}
.skip:focus { left: var(--am-space-4); top: var(--am-space-4); }

/* ---------- header ------------------------------------------------------ */
header.top, .site-header {
  border-bottom: var(--am-rule);
  position: sticky; top: 0; z-index: var(--am-z-sticky);
  background: color-mix(in oklab, var(--am-bg) 86%, transparent);
  backdrop-filter: blur(10px);          /* one fixed-area instance only */
}
header.top .wrap, .site-header .wrap {
  display: flex; align-items: center; gap: var(--am-space-4);
  padding-block: var(--am-space-4);
  /* The brand wordmark is `white-space: nowrap` and the nav is a rigid row,
     so at 390px the two together measured 399px and pushed the whole document
     sideways — on the homepage, on all eleven tool pages, and on anything else
     using this header. Wrapping is enough to fix it, and costs nothing at
     wider sizes because the row fits. */
  flex-wrap: wrap;
  row-gap: var(--am-space-2);
}
.brand {
  display: inline-flex; align-items: center; gap: var(--am-space-3);
  text-decoration: none; color: inherit;
  font-size: var(--am-text-xs);
  letter-spacing: var(--am-tracking-brand);
  text-transform: uppercase;
  font-weight: var(--am-weight-medium);
  white-space: nowrap;
}
.brand svg, .mark { width: 24px; height: 24px; flex: none; display: block; }
header.top nav, .site-header nav {
  margin-left: auto; display: flex; flex-wrap: wrap;
  gap: var(--am-space-3) var(--am-space-5);
}
/* Below the wrap point the nav owns the second row rather than being pushed
   to one side of it. */
@media (max-width: 26rem) {
  header.top nav, .site-header nav { margin-left: 0; gap: var(--am-space-4); }
}
header.top nav a, .site-header nav a {
  color: var(--am-text-muted); text-decoration: none; font-size: var(--am-text-sm);
}
header.top nav a:hover, .site-header nav a:hover { color: var(--am-text); }
/* The page you are on. Marked with aria-current in the markup, so this is the
   visible half of a fact assistive tech already gets — never colour alone:
   the underline carries it for anyone who cannot see the contrast shift. */
header.top nav a[aria-current="page"], .site-header nav a[aria-current="page"] {
  color: var(--am-text);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
  text-decoration-color: var(--am-accent);
}

/* ---------- hero -------------------------------------------------------- */
.hero { padding-block: var(--am-space-20) var(--am-space-10); }
h1, .hero h1 {
  font-family: var(--am-font-display);
  /* Stated, not inherited: the Fraunces wght axis defaults to 900. */
  font-weight: var(--am-display-weight);
  font-size: var(--am-text-3xl);
  line-height: var(--am-leading-tight);
  letter-spacing: var(--am-tracking-display);
  margin: 0 0 var(--am-space-5);
  max-width: 22ch;
  text-wrap: balance;
}
.hero p, .lede {
  font-size: var(--am-text-lg);
  color: var(--am-text-muted);
  max-width: 62ch;
  margin: 0 0 var(--am-space-6);
}

/* ---------- body copy --------------------------------------------------- */
main { padding-bottom: var(--am-space-20); }
h2 {
  /* Section headings are display type now. They were set in the sans because
     Basteleur was unusable at this size — its character became noise below
     hero scale — and that constraint left every page with a serif hero
     followed by sans headings that read as a different document. Fraunces
     holds at 27px, so the reason is gone and the split with it.
     `font-optical-sizing: auto` is the browser default and is doing real
     work here: this renders sturdier and more open than the h1, not smaller. */
  font-family: var(--am-font-display);
  font-weight: var(--am-display-weight);
  font-size: var(--am-text-xl);
  line-height: var(--am-leading-snug);
  letter-spacing: var(--am-tracking-tight);
  margin: var(--am-space-16) 0 var(--am-space-4);
  padding-top: var(--am-space-6);
  border-top: var(--am-rule);
  text-wrap: balance;
}
h3 {
  font-family: var(--am-font-display);
  font-weight: var(--am-display-weight);
  font-size: var(--am-text-lg);
  letter-spacing: var(--am-tracking-tight);
  margin: var(--am-space-8) 0 var(--am-space-2);
}
p { max-width: var(--am-measure); }
main ul { max-width: var(--am-measure); padding-left: 1.15rem; }
main li { margin-bottom: var(--am-space-2); }

/* ---------- tags: square-cut, never pills ------------------------------- */
.tag {
  display: inline-block;
  font-family: var(--am-font-mono);
  font-size: var(--am-text-2xs);
  text-transform: uppercase;
  letter-spacing: var(--am-tracking-label);
  color: var(--am-text-muted);
  border: 1px solid var(--am-border-strong);
  padding: 2px var(--am-space-2);
  margin-right: var(--am-space-2);
  margin-bottom: var(--am-space-2);
}

/* ---------- calls to action --------------------------------------------- */
.cta {
  display: inline-block;
  background: var(--am-accent);
  color: var(--am-on-accent);
  padding: var(--am-space-3) var(--am-space-5);
  border: var(--am-border-heavy) solid var(--am-accent);
  border-radius: var(--am-radius-sm);
  text-decoration: none;
  font-weight: var(--am-weight-medium);
  margin: var(--am-space-2) var(--am-space-2) var(--am-space-2) 0;
  transition: background-color var(--mo-1) var(--mo-ease-out),
              scale var(--mo-2) var(--mo-ease-out);
  touch-action: manipulation;
}
.cta:hover { background: var(--am-accent-hover); border-color: var(--am-accent-hover); }
.cta:active { scale: .97; transition-duration: 60ms; }
.cta.ghost { background: transparent; color: var(--am-accent); }
.cta.ghost:hover { background: var(--am-accent-quiet); }

/* ---------- tables ------------------------------------------------------ */
.scroll { overflow-x: auto; }        /* wide tables scroll in their own box */
table { border-collapse: collapse; width: 100%; font-size: var(--am-text-sm); }
th, td { text-align: left; padding: var(--am-space-2) var(--am-space-3); border-bottom: var(--am-rule); vertical-align: top; }
th {
  font-family: var(--am-font-mono);
  font-size: var(--am-text-2xs);
  text-transform: uppercase;
  letter-spacing: var(--am-tracking-label);
  color: var(--am-text-faint);
  font-weight: var(--am-weight-medium);
}
td code, .mono { font-family: var(--am-font-mono); font-size: 0.92em; }
td { font-variant-numeric: tabular-nums; }

/* ---------- code -------------------------------------------------------- */
pre {
  background: var(--am-bg-sunk);
  border: var(--am-rule);
  border-left: 3px solid var(--am-border-strong);
  padding: var(--am-space-4) var(--am-space-5);
  overflow-x: auto;
  font-size: var(--am-text-sm);
  line-height: 1.5;
}
pre code { font-family: var(--am-font-mono); }

/* ---------- FAQ --------------------------------------------------------- */
details.faq { border-top: var(--am-rule); padding-block: var(--am-space-3); max-width: var(--am-measure); }
details.faq summary {
  cursor: pointer; font-weight: var(--am-weight-medium);
  list-style-position: outside; padding-block: var(--am-space-1);
}
details.faq summary:hover { color: var(--am-accent); }
details.faq[open] summary { color: var(--am-accent); }
details.faq p { color: var(--am-text-muted); font-size: var(--am-text-sm); margin-bottom: 0; }

/* ---------- footer ------------------------------------------------------ */
footer {
  border-top: var(--am-rule);
  margin-top: var(--am-space-16);
  padding-block: var(--am-space-10) var(--am-space-20);
  font-size: var(--am-text-sm);
  color: var(--am-text-muted);
}
footer a { color: var(--am-text-muted); }
footer a:hover { color: var(--am-accent); }

img, svg { max-width: 100%; height: auto; }

/* ---------- a row of links ------------------------------------------------
   Links strung through a paragraph on middots overlapped each other once they
   wrapped — measured as a P1 at 390px AND 1440px on all eleven tool pages.
   A list is what this always was; flex gap keeps the rows apart at any width
   and the padding lifts each one toward a real tap target. */
ul.linkrow {
  list-style: none; padding: 0; margin: var(--am-space-2) 0 0;
  display: flex; flex-wrap: wrap; gap: var(--am-space-2) var(--am-space-6);
  max-width: var(--am-measure);
}
ul.linkrow li { margin: 0; }
ul.linkrow a { display: inline-block; padding-block: var(--am-space-2); }

/* Fine print. Was inline `color: var(--muted)` on twelve pages — a token that
   does not exist, so every one of them rendered at full body contrast. */
.fineprint {
  color: var(--am-text-faint);
  font-size: var(--am-text-sm);
  margin-top: var(--am-space-10);
}